<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    ul>li{
        list-style: none;
    }
    li{
        height: 100px;
        width: 100px;
        background-color: antiquewhite;
        margin: 10px;
    }
    ul:hover>li:nth-child(1){
        width: 800px;
        transition: all linear 5s 2s;
    }
    ul:hover>li:nth-child(2){
        width: 800px;
        transition: all ease 5s 2s;
    }
    ul:hover>li:nth-child(3){
        width: 800px;
        transition: all ease-in 5s 2s;
    }
    ul:hover>li:nth-child(4){
        width: 800px;
        transition: all ease-out 5s 2s;
    }
    ul:hover>li:nth-child(5){
        width: 800px;
        transition: all ease-in-out 5s 2s;
    }
    ul:hover>li:nth-child(6){
        width: 800px;
        transition: all steps(8) 5s 2s;
    }
    ul:hover>li:nth-child(7){
        width: 800px;
        transition: all cubic-bezier(.58,1.87,.42,-0.68), 5s 2s;
    }
</style>
<body>
   <ul>
    <li>匀速 liner</li>
    <li>逐渐变慢 ease</li>
    <li>加速 ease-in</li>
    <li>减速 ease-out</li>
    <li>先加速后减速 ease-in-out</li>
    <li>执行步数 steps</li>
    <li>贝塞尔曲线</li>
   </ul>
</body>
</html>